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        <li class="chapter " data-level="1.1" data-path="../">
            
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                    Introduction
            
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        <li class="chapter " data-level="1.2" data-path="../meet_qt_5/">
            
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                    Qt5概述
            
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                    序
            
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                    Qt5介绍
            
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                    Qt构建模块（Qt Building Blocks）
            
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                    Qt项目（Qt Project）
            
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                    开始学习（Get Start）
            
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                    安装Qt5软件工具包（Installing Qt 5 SDK）
            
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                    你好世界（Hello World）
            
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                    应用程序类型（Application Types）
            
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                    总结（ Summary）
            
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                    Qt Creator集成开发环境（Qt Creator IDE）
            
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                    用户界面（The User Interface）
            
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                    注册你的Qt工具箱（Registering your Qt Kit）
            
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        <li class="chapter " data-level="1.4.3" data-path="../qt_creator_ide/managing_projects.html">
            
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                    项目管理（Managing Projects）
            
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                    使用编辑器（Using the Editor）
            
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                    定位器（Locator）
            
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                    调试（Debugging）
            
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        <li class="chapter " data-level="1.4.7" data-path="../qt_creator_ide/shortcuts.html">
            
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                    快捷键（Shortcuts）
            
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            </ul>
            
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        <li class="chapter " data-level="1.5" data-path="./">
            
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                    QML快速入门（Quick Starter）
            
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        <li class="chapter active" data-level="1.5.1" data-path="qmlqml_syntax.html">
            
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                    QML语法（QML Syntax）
            
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                    基本元素（Basic Elements）
            
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        <li class="chapter " data-level="1.5.3" data-path="compontents.html">
            
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                    组件（Compontents）
            
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        <li class="chapter " data-level="1.5.4" data-path="simple_transformations.html">
            
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                    简单的转换（Simple Transformations）
            
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                    定位元素（Positioning Element）
            
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                    布局元素（Layout Items）
            
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        <li class="chapter " data-level="1.5.7" data-path="input_element.html">
            
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                    输入元素（Input Element）
            
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        <li class="chapter " data-level="1.5.8" data-path="advanced_techniques.html">
            
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                     高级用法（Advanced Techniques）
            
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        <li class="chapter " data-level="1.6" data-path="../fluid_elements/">
            
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                    动态元素（Fluid Elements）
            
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        <li class="chapter " data-level="1.6.1" data-path="../fluid_elements/animations.html">
            
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                    动画（Animations）
            
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        <li class="chapter " data-level="1.6.2" data-path="../fluid_elements/states_and_transitions.html">
            
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                    状态与过渡（States and Transitions）
            
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        <li class="chapter " data-level="1.6.3" data-path="../fluid_elements/advanced_techniques.html">
            
                <a href="../fluid_elements/advanced_techniques.html">
            
                    
                    高级用法（Advanced Techniques）
            
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            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.7" data-path="../model-view-delegate/">
            
                <a href="../model-view-delegate/">
            
                    
                    模型-视图-代理（Model-View-Delegate）
            
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        <li class="chapter " data-level="1.7.1" data-path="../model-view-delegate/concept.html">
            
                <a href="../model-view-delegate/concept.html">
            
                    
                    概念（Concept）
            
                </a>
            

            
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        <li class="chapter " data-level="1.7.2" data-path="../model-view-delegate/basic_model.html">
            
                <a href="../model-view-delegate/basic_model.html">
            
                    
                    基础模型（Basic Model）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.7.3" data-path="../model-view-delegate/dynamic_views.html">
            
                <a href="../model-view-delegate/dynamic_views.html">
            
                    
                    动态视图（Dynamic Views）
            
                </a>
            

            
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        <li class="chapter " data-level="1.7.4" data-path="../model-view-delegate/delegate.html">
            
                <a href="../model-view-delegate/delegate.html">
            
                    
                    代理（Delegate）
            
                </a>
            

            
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        <li class="chapter " data-level="1.7.5" data-path="../model-view-delegate/advanced_techniques.html">
            
                <a href="../model-view-delegate/advanced_techniques.html">
            
                    
                    高级用法（Advanced Techniques）
            
                </a>
            

            
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        <li class="chapter " data-level="1.7.6" data-path="../model-view-delegate/summary.html">
            
                <a href="../model-view-delegate/summary.html">
            
                    
                    总结（Summary）
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.8" data-path="../canvas_element/">
            
                <a href="../canvas_element/">
            
                    
                    画布元素（Canvas Element）
            
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            <ul class="articles">
                
    
        <li class="chapter " data-level="1.8.1" data-path="../canvas_element/convenient_api.html">
            
                <a href="../canvas_element/convenient_api.html">
            
                    
                    便捷的接口（Convenient API）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.2" data-path="../canvas_element/gradients.html">
            
                <a href="../canvas_element/gradients.html">
            
                    
                    渐变（Gradients）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.3" data-path="../canvas_element/shadows.html">
            
                <a href="../canvas_element/shadows.html">
            
                    
                    阴影（Shadows）
            
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        <li class="chapter " data-level="1.8.4" data-path="../canvas_element/images.html">
            
                <a href="../canvas_element/images.html">
            
                    
                    图片（Images）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.5" data-path="../canvas_element/transformation.html">
            
                <a href="../canvas_element/transformation.html">
            
                    
                    转换（Transformation）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.6" data-path="../canvas_element/composition_mode.html">
            
                <a href="../canvas_element/composition_mode.html">
            
                    
                    组合模式（Composition Mode）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.7" data-path="../canvas_element/pixels_buffer.html">
            
                <a href="../canvas_element/pixels_buffer.html">
            
                    
                    像素缓冲（Pixels Buffer）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.8" data-path="../canvas_element/canvas_paint.html">
            
                <a href="../canvas_element/canvas_paint.html">
            
                    
                    画布绘制（Canvas Paint）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.8.9" data-path="../canvas_element/html5porting_from_html5_canvas.html">
            
                <a href="../canvas_element/html5porting_from_html5_canvas.html">
            
                    
                    HTML5画布移植（Porting from HTML5 Canvas）
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.9" data-path="../particle_simulations/">
            
                <a href="../particle_simulations/">
            
                    
                    粒子模拟（Particle Simulations）
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.9.1" data-path="../particle_simulations/concept.html">
            
                <a href="../particle_simulations/concept.html">
            
                    
                    概念（Concept）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.2" data-path="../particle_simulations/simple_simulation.html">
            
                <a href="../particle_simulations/simple_simulation.html">
            
                    
                    简单的模拟（Simple Simulation）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.3" data-path="../particle_simulations/particle_parameters.html">
            
                <a href="../particle_simulations/particle_parameters.html">
            
                    
                    粒子参数（Particle Parameters）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.4" data-path="../particle_simulations/directed_particle.html">
            
                <a href="../particle_simulations/directed_particle.html">
            
                    
                    粒子方向（Directed Particle）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.5" data-path="../particle_simulations/particle_painter.html">
            
                <a href="../particle_simulations/particle_painter.html">
            
                    
                    粒子画笔（Particle Painter）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.6" data-path="../particle_simulations/affecting_particles.html">
            
                <a href="../particle_simulations/affecting_particles.html">
            
                    
                    粒子控制（Affecting Particles）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.7" data-path="../particle_simulations/particle_group.html">
            
                <a href="../particle_simulations/particle_group.html">
            
                    
                    粒子组（Particle Group）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.9.8" data-path="../particle_simulations/summary.html">
            
                <a href="../particle_simulations/summary.html">
            
                    
                    总结（Summary）
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.10" data-path="../shader_effect/">
            
                <a href="../shader_effect/">
            
                    
                    着色器效果（Shader Effect）
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.10.1" data-path="../shader_effect/openglopengl_shader.html">
            
                <a href="../shader_effect/openglopengl_shader.html">
            
                    
                    OpenGL着色器（OpenGL Shader）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.2" data-path="../shader_effect/shader_elements.html">
            
                <a href="../shader_effect/shader_elements.html">
            
                    
                    着色器元素（Shader Elements）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.3" data-path="../shader_effect/fragement_shader.html">
            
                <a href="../shader_effect/fragement_shader.html">
            
                    
                    片段着色器（Fragement Shader）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.4" data-path="../shader_effect/wave_effect.html">
            
                <a href="../shader_effect/wave_effect.html">
            
                    
                    波浪效果（Wave Effect）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.5" data-path="../shader_effect/vertex_shader.html">
            
                <a href="../shader_effect/vertex_shader.html">
            
                    
                    顶点着色器（Vertex Shader）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.6" data-path="../shader_effect/curtain_effect.html">
            
                <a href="../shader_effect/curtain_effect.html">
            
                    
                    剧幕效果（Curtain Effect）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.10.7" data-path="../shader_effect/qtqt_graphicseffect_library.html">
            
                <a href="../shader_effect/qtqt_graphicseffect_library.html">
            
                    
                    Qt图像效果库（Qt GraphicsEffect Library）
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.11" data-path="../multimedia/">
            
                <a href="../multimedia/">
            
                    
                    多媒体（Multimedia）
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.11.1" data-path="../multimedia/playing_media.html">
            
                <a href="../multimedia/playing_media.html">
            
                    
                    媒体播放（Playing Media）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.2" data-path="../multimedia/sounds_effects.html">
            
                <a href="../multimedia/sounds_effects.html">
            
                    
                    声音效果（Sounds Effects）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.3" data-path="../multimedia/video_streams.html">
            
                <a href="../multimedia/video_streams.html">
            
                    
                    视频流（Video Streams）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.4" data-path="../multimedia/capturing_images.html">
            
                <a href="../multimedia/capturing_images.html">
            
                    
                    捕捉图像（Capturing Images）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.5" data-path="../multimedia/advanced_techniques.html">
            
                <a href="../multimedia/advanced_techniques.html">
            
                    
                    高级用法（Advanced Techniques）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.11.6" data-path="../multimedia/summary.html">
            
                <a href="../multimedia/summary.html">
            
                    
                    总结（Summary）
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.12" data-path="../networking/">
            
                <a href="../networking/">
            
                    
                    网络（Networking）
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="1.12.1" data-path="../networking/httpuiserving_ui_via_http.html">
            
                <a href="../networking/httpuiserving_ui_via_http.html">
            
                    
                    通过HTTP服务UI（Serving UI via HTTP）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.2" data-path="../networking/templating.html">
            
                <a href="../networking/templating.html">
            
                    
                    模板（Templating）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.3" data-path="../networking/httphttp_requests.html">
            
                <a href="../networking/httphttp_requests.html">
            
                    
                    HTTP请求（HTTP Requests）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.4" data-path="../networking/local_files.html">
            
                <a href="../networking/local_files.html">
            
                    
                    本地文件（Local files）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.5" data-path="../networking/restrest_api.html">
            
                <a href="../networking/restrest_api.html">
            
                    
                    REST接口（REST API）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.6" data-path="../networking/authentication_using_oauth.html">
            
                <a href="../networking/authentication_using_oauth.html">
            
                    
                    使用开放授权登陆验证（Authentication using OAuth）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.7" data-path="../networking/engine_io.html">
            
                <a href="../networking/engine_io.html">
            
                    
                    云服务（Engine IO）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.8" data-path="../networking/web_sockets.html">
            
                <a href="../networking/web_sockets.html">
            
                    
                    Web Sockets
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.12.9" data-path="../networking/summary.html">
            
                <a href="../networking/summary.html">
            
                    
                    总结（Summary）
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.13" data-path="../storage/">
            
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                    存储（Storage）
            
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                    配置（Settings）
            
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        <li class="chapter " data-level="1.13.2" data-path="../storage/local_storage_-_sql.html">
            
                <a href="../storage/local_storage_-_sql.html">
            
                    
                    本地存储 - SQL（Local Storage - SQL）
            
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        <li class="chapter " data-level="1.13.3" data-path="../storage/other_storage_apis.html">
            
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                    其它存储接口（Other Storage APIs）
            
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        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="1.14" data-path="../dynamic_qml/">
            
                <a href="../dynamic_qml/">
            
                    
                    动态QML（Dynamic QML）
            
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            <ul class="articles">
                
    
        <li class="chapter " data-level="1.14.1" data-path="../dynamic_qml/loading_components_dynamically.html">
            
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                    动态加载组件（Loading Components Dynamically）
            
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                    间接连接（Connecting Indirectly）
            
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        <li class="chapter " data-level="1.14.1.2" data-path="../dynamic_qml/binding_indirectly.html">
            
                <a href="../dynamic_qml/binding_indirectly.html">
            
                    
                    间接绑定（Binding Indirectly）
            
                </a>
            

            
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                    创建与销毁对象（Creating and Destroying Objects）
            
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                    动态加载和实例化项（Dynamically Loading and Instantiating Items）
            
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                    从文本中动态实例化项（Dynamically Instantiating Items from Text）
            
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                    管理动态创建的元素（Managing Dynamically Created Elements）
            
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                    跟踪动态对象（Tracking Dynamic Objects）
            
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                    总结（Summary）
            
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                    JavaScript
            
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                    浏览器/HTML与QtQuick/QML对比（Browser/HTML vs QtQuick/QML）
            
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        <li class="chapter " data-level="1.15.2" data-path="../javascript/the_language.html">
            
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                    JavaScript语法（The Language）
            
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        <li class="chapter " data-level="1.15.3" data-path="../javascript/js_objects.html">
            
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                    JS对象（JS Objects）
            
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        <li class="chapter " data-level="1.15.4" data-path="../javascript/creating_a_js_console.html">
            
                <a href="../javascript/creating_a_js_console.html">
            
                    
                    创建JS控制台（Creating a JS Console）
            
                </a>
            

            
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        <li class="chapter " data-level="1.16" data-path="../qt_and_c++/">
            
                <a href="../qt_and_c++/">
            
                    
                    Qt and C++
            
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            <ul class="articles">
                
    
        <li class="chapter " data-level="1.16.1" data-path="../qt_and_c++/a_boilerplate_application.html">
            
                <a href="../qt_and_c++/a_boilerplate_application.html">
            
                    
                    演示程序（A Boilerplate Application）
            
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        <li class="chapter " data-level="1.16.2" data-path="../qt_and_c++/the_qobject.html">
            
                <a href="../qt_and_c++/the_qobject.html">
            
                    
                    Qt对象（The QObject）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="1.16.3" data-path="../qt_and_c++/build_systems.html">
            
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                    编译系统（Build Systems）
            
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            <ul class="articles">
                
    
        <li class="chapter " data-level="1.16.3.1" data-path="../qt_and_c++/qmake.html">
            
                <a href="../qt_and_c++/qmake.html">
            
                    
                    QMake
            
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        <li class="chapter " data-level="1.16.3.2" data-path="../qt_and_c++/cmake.html">
            
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                    CMake
            
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                    Qt通用类（Common Qt Classes）
            
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                    QString
            
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        <li class="chapter " data-level="1.16.4.2" data-path="../qt_and_c++/sequential_containers.html">
            
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                    顺序容器（Sequential Containers）
            
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        <li class="chapter " data-level="1.16.4.3" data-path="../qt_and_c++/associative_containers.html">
            
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                    组合容器（Associative Containers）
            
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        <li class="chapter " data-level="1.16.4.4" data-path="../qt_and_c++/file_io.html">
            
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                    文件IO（File IO）
            
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            </ul>
            
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        <li class="chapter " data-level="1.16.5" data-path="../qt_and_c++/models_in_c++.html">
            
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                    C++数据模型（Models in C++）
            
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            <ul class="articles">
                
    
        <li class="chapter " data-level="1.16.5.1" data-path="../qt_and_c++/a_simple_model.html">
            
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                    一个简单的模型（A simple model）
            
                </a>
            

            
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        <li class="chapter " data-level="1.16.5.2" data-path="../qt_and_c++/more_complex_data.html">
            
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                    更复杂的数据（More Complex Data）
            
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        <li class="chapter " data-level="1.16.5.3" data-path="../qt_and_c++/dynamic_data.html">
            
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                    动态数据（Dynamic Data）
            
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                    进阶技巧（Advanced Techniques）
            
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        <li class="chapter " data-level="1.17" data-path="../extending_qml_with_c++/">
            
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                    C++扩展QML（Extending QML with C++）
            
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        <li class="chapter " data-level="1.17.1" data-path="../extending_qml_with_c++/understanding_the_qml_run-time.html">
            
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                    理解QML运行环境（Understanding the QML Run-time）
            
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        <li class="chapter " data-level="1.17.2" data-path="../extending_qml_with_c++/plugin_content.html">
            
                <a href="../extending_qml_with_c++/plugin_content.html">
            
                    
                    插件内容（Plugin Content）
            
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        <li class="chapter " data-level="1.17.3" data-path="../extending_qml_with_c++/creating_the_plugin.html">
            
                <a href="../extending_qml_with_c++/creating_the_plugin.html">
            
                    
                    创建插件（Creating the plugin）
            
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        <li class="chapter " data-level="1.17.4" data-path="../extending_qml_with_c++/fileio_implementation.html">
            
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                    FileIO实现（FileIO Implementation）
            
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        <li class="chapter " data-level="1.17.5" data-path="../extending_qml_with_c++/using_fileio.html">
            
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                    使用FileIO（Using FileIO）
            
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        <li class="chapter " data-level="1.17.5.1" data-path="../extending_qml_with_c++/the_application_window.html">
            
                <a href="../extending_qml_with_c++/the_application_window.html">
            
                    
                    应用程序窗口（The Application Window）
            
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        <li class="chapter " data-level="1.17.5.2" data-path="../extending_qml_with_c++/using_actions.html">
            
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                    使用动作（Using Actions）
            
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        <li class="chapter " data-level="1.17.5.3" data-path="../extending_qml_with_c++/formatting_the_table.html">
            
                <a href="../extending_qml_with_c++/formatting_the_table.html">
            
                    
                    格式化表格（Formatting the Table）
            
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        <li class="chapter " data-level="1.17.5.4" data-path="../extending_qml_with_c++/reading_data.html">
            
                <a href="../extending_qml_with_c++/reading_data.html">
            
                    
                    读取数据（Reading Data）
            
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        <li class="chapter " data-level="1.17.5.5" data-path="../extending_qml_with_c++/writing_data.html">
            
                <a href="../extending_qml_with_c++/writing_data.html">
            
                    
                    写入数据（Writing Data）
            
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        </li>
    
        <li class="chapter " data-level="1.17.5.6" data-path="../extending_qml_with_c++/finishing_touch.html">
            
                <a href="../extending_qml_with_c++/finishing_touch.html">
            
                    
                    收尾工作（Finishing Touch）
            
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        <li class="chapter " data-level="1.17.6" data-path="../extending_qml_with_c++/summary.html">
            
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                    总结（Summary）
            
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        <li class="chapter " data-level="1.18" data-path="../other/">
            
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                    其它（Other）
            
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                    示例源码
            
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                    术语英汉对照表
            
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                    格式定义
            
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                    协作校正
            
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                                <h1 id="qml&#x8BED;&#x6CD5;&#xFF08;qml-syntax&#xFF09;">QML&#x8BED;&#x6CD5;&#xFF08;QML Syntax&#xFF09;</h1>
<p>QML&#x662F;&#x4E00;&#x79CD;&#x63CF;&#x8FF0;&#x7528;&#x6237;&#x754C;&#x9762;&#x7684;&#x58F0;&#x660E;&#x5F0F;&#x8BED;&#x8A00;&#x3002;&#x5B83;&#x5C06;&#x7528;&#x6237;&#x754C;&#x9762;&#x5206;&#x89E3;&#x6210;&#x4E00;&#x4E9B;&#x66F4;&#x5C0F;&#x7684;&#x5143;&#x7D20;&#xFF0C;&#x8FD9;&#x4E9B;&#x5143;&#x7D20;&#x80FD;&#x591F;&#x7ED3;&#x5408;&#x6210;&#x4E00;&#x4E2A;&#x7EC4;&#x4EF6;&#x3002;QML&#x8BED;&#x8A00;&#x63CF;&#x8FF0;&#x4E86;&#x7528;&#x6237;&#x754C;&#x9762;&#x5143;&#x7D20;&#x7684;&#x5F62;&#x72B6;&#x548C;&#x884C;&#x4E3A;&#x3002;&#x7528;&#x6237;&#x754C;&#x9762;&#x80FD;&#x591F;&#x4F7F;&#x7528;JavaScript&#x6765;&#x63D0;&#x4F9B;&#x4FEE;&#x9970;&#xFF0C;&#x6216;&#x8005;&#x589E;&#x52A0;&#x66F4;&#x52A0;&#x590D;&#x6742;&#x7684;&#x903B;&#x8F91;&#x3002;&#x4ECE;&#x8FD9;&#x4E2A;&#x89D2;&#x5EA6;&#x6765;&#x770B;&#x5B83;&#x9075;&#x5FAA;HTML-JavaScript&#x6A21;&#x5F0F;&#xFF0C;&#x4F46;QML&#x662F;&#x88AB;&#x8BBE;&#x8BA1;&#x7528;&#x6765;&#x63CF;&#x8FF0;&#x7528;&#x6237;&#x754C;&#x9762;&#x7684;&#xFF0C;&#x800C;&#x4E0D;&#x662F;&#x6587;&#x672C;&#x6587;&#x6863;&#x3002;</p>
<p>&#x4ECE;QML&#x5143;&#x7D20;&#x7684;&#x5C42;&#x6B21;&#x7ED3;&#x6784;&#x6765;&#x7406;&#x89E3;&#x662F;&#x6700;&#x7B80;&#x5355;&#x7684;&#x5B66;&#x4E60;&#x65B9;&#x5F0F;&#x3002;&#x5B50;&#x5143;&#x7D20;&#x4ECE;&#x7236;&#x5143;&#x7D20;&#x4E0A;&#x7EE7;&#x627F;&#x4E86;&#x5750;&#x6807;&#x7CFB;&#x7EDF;&#xFF0C;&#x5B83;&#x7684;x,y&#x5750;&#x6807;&#x603B;&#x662F;&#x76F8;&#x5BF9;&#x5E94;&#x4E8E;&#x5B83;&#x7684;&#x7236;&#x5143;&#x7D20;&#x5750;&#x6807;&#x7CFB;&#x7EDF;&#x3002;</p>
<p><img src="http://qmlbook.org/_images/scene.png" alt=""></p>
<p>&#x8BA9;&#x6211;&#x4EEC;&#x5F00;&#x59CB;&#x7528;&#x4E00;&#x4E2A;&#x7B80;&#x5355;&#x7684;QML&#x6587;&#x4EF6;&#x4F8B;&#x5B50;&#x6765;&#x89E3;&#x91CA;&#x8FD9;&#x4E2A;&#x8BED;&#x6CD5;&#x3002;</p>
<pre><code>// rectangle.qml

import QtQuick 2.0

// The root element is the Rectangle
Rectangle {
    // name this element root
    id: root

    // properties: &lt;name&gt;: &lt;value&gt;
    width: 120; height: 240

    // color property
    color: &quot;#D8D8D8&quot;

    // Declare a nested element (child of root)
    Image {
        id: rocket

        // reference the parent
        x: (parent.width - width)/2; y: 40

        source: &apos;assets/rocket.png&apos;
    }

    // Another child of root
    Text {
        // un-named element

        // reference element by id
        y: rocket.y + rocket.height + 20

        // reference root element
        width: root.width

        horizontalAlignment: Text.AlignHCenter
        text: &apos;Rocket&apos;
    }
}
</code></pre><ul>
<li><p>import&#x58F0;&#x660E;&#x5BFC;&#x5165;&#x4E86;&#x4E00;&#x4E2A;&#x6307;&#x5B9A;&#x7684;&#x6A21;&#x5757;&#x7248;&#x672C;&#x3002;&#x4E00;&#x822C;&#x6765;&#x8BF4;&#x4F1A;&#x5BFC;&#x5165;QtQuick2.0&#x6765;&#x4F5C;&#x4E3A;&#x521D;&#x59CB;&#x5143;&#x7D20;&#x7684;&#x5F15;&#x7528;&#x3002;</p>
</li>
<li><p>&#x4F7F;&#x7528;//&#x53EF;&#x4EE5;&#x5355;&#x884C;&#x6CE8;&#x91CA;&#xFF0C;&#x4F7F;&#x7528;/**/&#x53EF;&#x4EE5;&#x591A;&#x884C;&#x6CE8;&#x91CA;&#xFF0C;&#x5C31;&#x50CF;C/C++&#x548C;JavaScript&#x4E00;&#x6837;&#x3002;</p>
</li>
<li><p>&#x6BCF;&#x4E00;&#x4E2A;QML&#x6587;&#x4EF6;&#x90FD;&#x9700;&#x8981;&#x4E00;&#x4E2A;&#x6839;&#x5143;&#x7D20;&#xFF0C;&#x5C31;&#x50CF;HTML&#x4E00;&#x6837;&#x3002;</p>
</li>
<li><p>&#x4E00;&#x4E2A;&#x5143;&#x7D20;&#x4F7F;&#x7528;&#x5B83;&#x7684;&#x7C7B;&#x578B;&#x58F0;&#x660E;&#xFF0C;&#x7136;&#x540E;&#x4F7F;&#x7528;{}&#x8FDB;&#x884C;&#x5305;&#x542B;&#x3002;</p>
</li>
<li><p>&#x5143;&#x7D20;&#x62E5;&#x6709;&#x5C5E;&#x6027;&#xFF0C;&#x4ED6;&#x4EEC;&#x6309;&#x7167;name:value&#x7684;&#x683C;&#x5F0F;&#x6765;&#x8D4B;&#x503C;&#x3002;</p>
</li>
<li><p>&#x4EFB;&#x4F55;&#x5728;QML&#x6587;&#x6863;&#x4E2D;&#x7684;&#x5143;&#x7D20;&#x90FD;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x5B83;&#x4EEC;&#x7684;id&#x8FDB;&#x884C;&#x8BBF;&#x95EE;&#xFF08;id&#x662F;&#x4E00;&#x4E2A;&#x4EFB;&#x610F;&#x7684;&#x6807;&#x8BC6;&#x7B26;&#xFF09;&#x3002;</p>
</li>
<li><p>&#x5143;&#x7D20;&#x53EF;&#x4EE5;&#x5D4C;&#x5957;&#xFF0C;&#x8FD9;&#x610F;&#x5473;&#x7740;&#x4E00;&#x4E2A;&#x7236;&#x5143;&#x7D20;&#x53EF;&#x4EE5;&#x62E5;&#x6709;&#x591A;&#x4E2A;&#x5B50;&#x5143;&#x7D20;&#x3002;&#x5B50;&#x5143;&#x7D20;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x8BBF;&#x95EE;parent&#x5173;&#x952E;&#x5B57;&#x6765;&#x8BBF;&#x95EE;&#x5B83;&#x4EEC;&#x7684;&#x7236;&#x5143;&#x7D20;&#x3002;</p>
</li>
</ul>
<p><strong>&#x5EFA;&#x8BAE;</strong></p>
<p><strong>&#x4F60;&#x4F1A;&#x7ECF;&#x5E38;&#x4F7F;&#x7528;id&#x6216;&#x8005;&#x5173;&#x952E;&#x5B57;parent&#x6765;&#x8BBF;&#x95EE;&#x4F60;&#x7684;&#x7236;&#x5BF9;&#x8C61;&#x3002;&#x6709;&#x4E00;&#x4E2A;&#x6BD4;&#x8F83;&#x597D;&#x7684;&#x65B9;&#x6CD5;&#x662F;&#x547D;&#x540D;&#x4F60;&#x7684;&#x6839;&#x5143;&#x7D20;&#x5BF9;&#x8C61;id&#x4E3A;root&#xFF08;id:root&#xFF09;&#xFF0C;&#x8FD9;&#x6837;&#x5C31;&#x4E0D;&#x7528;&#x53BB;&#x601D;&#x8003;&#x4F60;&#x7684;QML&#x6587;&#x6863;&#x4E2D;&#x7684;&#x6839;&#x5143;&#x7D20;&#x5E94;&#x8BE5;&#x7528;&#x4EC0;&#x4E48;&#x65B9;&#x5F0F;&#x547D;&#x540D;&#x4E86;&#x3002;</strong></p>
<p><strong>&#x63D0;&#x793A;</strong></p>
<p><strong>&#x4F60;&#x53EF;&#x4EE5;&#x5728;&#x4F60;&#x7684;&#x64CD;&#x4F5C;&#x7CFB;&#x7EDF;&#x547D;&#x4EE4;&#x884C;&#x6A21;&#x5F0F;&#x4E0B;&#x4F7F;&#x7528;QtQuick&#x8FD0;&#x884C;&#x73AF;&#x5883;&#x6765;&#x8FD0;&#x884C;&#x8FD9;&#x4E2A;&#x4F8B;&#x5B50;&#xFF0C;&#x6BD4;&#x5982;&#x50CF;&#x4E0B;&#x9762;&#x8FD9;&#x6837;&#xFF1A;</strong></p>
<pre><code>$ $QTDIR/bin/qmlscene rectangle.qml
</code></pre><p>&#x5C06;$QTDIR&#x66FF;&#x6362;&#x4E3A;&#x4F60;&#x7684;Qt&#x7684;&#x5B89;&#x88C5;&#x8DEF;&#x5F84;&#x3002;qmlscene&#x4F1A;&#x6267;&#x884C;Qt Quick&#x8FD0;&#x884C;&#x73AF;&#x5883;&#x521D;&#x59CB;&#x5316;&#xFF0C;&#x5E76;&#x4E14;&#x89E3;&#x91CA;&#x8FD9;&#x4E2A;QML&#x6587;&#x4EF6;&#x3002;</p>
<p>&#x5728;Qt Creator&#x4E2D;&#x4F60;&#x53EF;&#x4EE5;&#x6253;&#x5F00;&#x5BF9;&#x5E94;&#x7684;&#x9879;&#x76EE;&#x6587;&#x4EF6;&#x7136;&#x540E;&#x8FD0;&#x884C;rectangle.qml&#x6587;&#x6863;&#x3002;</p>
<h2 id="411-&#x5C5E;&#x6027;&#xFF08;properties&#xFF09;">4.1.1 &#x5C5E;&#x6027;&#xFF08;Properties&#xFF09;</h2>
<p>&#x5143;&#x7D20;&#x4F7F;&#x7528;&#x4ED6;&#x4EEC;&#x7684;&#x5143;&#x7D20;&#x7C7B;&#x578B;&#x540D;&#x8FDB;&#x884C;&#x58F0;&#x660E;&#xFF0C;&#x4F7F;&#x7528;&#x5B83;&#x4EEC;&#x7684;&#x5C5E;&#x6027;&#x6216;&#x8005;&#x521B;&#x5EFA;&#x81EA;&#x5B9A;&#x4E49;&#x5C5E;&#x6027;&#x6765;&#x5B9A;&#x4E49;&#x3002;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x5BF9;&#x5E94;&#x4E00;&#x4E2A;&#x503C;&#xFF0C;&#x4F8B;&#x5982; width:100&#xFF0C;text: &apos;Greeting&apos;, color: &apos;#FF0000&apos;&#x3002;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x6709;&#x4E00;&#x4E2A;&#x7C7B;&#x578B;&#x5B9A;&#x4E49;&#x5E76;&#x4E14;&#x9700;&#x8981;&#x4E00;&#x4E2A;&#x521D;&#x59CB;&#x503C;&#x3002;</p>
<pre><code>    Text {
        // (1) identifier
        id: thisLabel

        // (2) set x- and y-position
        x: 24; y: 16

        // (3) bind height to 2 * width
        height: 2 * width

        // (4) custom property
        property int times: 24

        // (5) property alias
        property alias anotherTimes: thisLabel.times

        // (6) set text appended by value
        text: &quot;Greetings &quot; + times

        // (7) font is a grouped property
        font.family: &quot;Ubuntu&quot;
        font.pixelSize: 24

        // (8) KeyNavigation is an attached property
        KeyNavigation.tab: otherLabel

        // (9) signal handler for property changes
        onHeightChanged: console.log(&apos;height:&apos;, height)

        // focus is neeed to receive key events
        focus: true

        // change color based on focus value
        color: focus?&quot;red&quot;:&quot;black&quot;
    }
</code></pre><p>&#x8BA9;&#x6211;&#x4EEC;&#x6765;&#x770B;&#x770B;&#x4E0D;&#x540C;&#x5C5E;&#x6027;&#x7684;&#x7279;&#x70B9;&#xFF1A;</p>
<ol>
<li><p>id&#x662F;&#x4E00;&#x4E2A;&#x975E;&#x5E38;&#x7279;&#x6B8A;&#x7684;&#x5C5E;&#x6027;&#x503C;&#xFF0C;&#x5B83;&#x5728;&#x4E00;&#x4E2A;QML&#x6587;&#x4EF6;&#x4E2D;&#x88AB;&#x7528;&#x6765;&#x5F15;&#x7528;&#x5143;&#x7D20;&#x3002;id&#x4E0D;&#x662F;&#x4E00;&#x4E2A;&#x5B57;&#x7B26;&#x4E32;&#xFF0C;&#x800C;&#x662F;&#x4E00;&#x4E2A;&#x6807;&#x8BC6;&#x7B26;&#x548C;QML&#x8BED;&#x6CD5;&#x7684;&#x4E00;&#x90E8;&#x5206;&#x3002;&#x4E00;&#x4E2A;id&#x5728;&#x4E00;&#x4E2A;QML&#x6587;&#x6863;&#x4E2D;&#x662F;&#x552F;&#x4E00;&#x7684;&#xFF0C;&#x5E76;&#x4E14;&#x4E0D;&#x80FD;&#x88AB;&#x8BBE;&#x7F6E;&#x4E3A;&#x5176;&#x5B83;&#x503C;&#xFF0C;&#x4E5F;&#x65E0;&#x6CD5;&#x88AB;&#x67E5;&#x8BE2;&#xFF08;&#x5B83;&#x7684;&#x884C;&#x4E3A;&#x66F4;&#x50CF;C++&#x4E16;&#x754C;&#x91CC;&#x7684;&#x6307;&#x9488;&#xFF09;&#x3002;</p>
</li>
<li><p>&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x80FD;&#x591F;&#x8BBE;&#x7F6E;&#x4E00;&#x4E2A;&#x503C;&#xFF0C;&#x8FD9;&#x4E2A;&#x503C;&#x4F9D;&#x8D56;&#x4E8E;&#x5B83;&#x7684;&#x7C7B;&#x578B;&#x3002;&#x5982;&#x679C;&#x6CA1;&#x6709;&#x5BF9;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x8D4B;&#x503C;&#xFF0C;&#x90A3;&#x4E48;&#x5B83;&#x5C06;&#x4F1A;&#x88AB;&#x521D;&#x59CB;&#x5316;&#x4E3A;&#x4E00;&#x4E2A;&#x9ED8;&#x8BA4;&#x503C;&#x3002;&#x4F60;&#x53EF;&#x4EE5;&#x67E5;&#x770B;&#x7279;&#x5B9A;&#x7684;&#x5143;&#x7D20;&#x7684;&#x6587;&#x6863;&#x6765;&#x83B7;&#x5F97;&#x8FD9;&#x4E9B;&#x521D;&#x59CB;&#x503C;&#x7684;&#x4FE1;&#x606F;&#x3002;</p>
</li>
<li><p>&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x80FD;&#x591F;&#x4F9D;&#x8D56;&#x4E00;&#x4E2A;&#x6216;&#x591A;&#x4E2A;&#x5176;&#x5B83;&#x7684;&#x5C5E;&#x6027;&#xFF0C;&#x8FD9;&#x79CD;&#x64CD;&#x4F5C;&#x79F0;&#x4F5C;&#x5C5E;&#x6027;&#x7ED1;&#x5B9A;&#x3002;&#x5F53;&#x5B83;&#x4F9D;&#x8D56;&#x7684;&#x5C5E;&#x6027;&#x6539;&#x53D8;&#x65F6;&#xFF0C;&#x5B83;&#x7684;&#x503C;&#x4E5F;&#x4F1A;&#x66F4;&#x65B0;&#x3002;&#x8FD9;&#x5C31;&#x50CF;&#x8BA2;&#x4E86;&#x4E00;&#x4E2A;&#x534F;&#x8BAE;&#xFF0C;&#x5728;&#x8FD9;&#x4E2A;&#x4F8B;&#x5B50;&#x4E2D;height&#x59CB;&#x7EC8;&#x662F;width&#x7684;&#x4E24;&#x500D;&#x3002;</p>
</li>
<li><p>&#x6DFB;&#x52A0;&#x81EA;&#x5DF1;&#x5B9A;&#x4E49;&#x7684;&#x5C5E;&#x6027;&#x9700;&#x8981;&#x4F7F;&#x7528;property&#x4FEE;&#x9970;&#x7B26;&#xFF0C;&#x7136;&#x540E;&#x8DDF;&#x4E0A;&#x7C7B;&#x578B;&#xFF0C;&#x540D;&#x5B57;&#x548C;&#x53EF;&#x9009;&#x62E9;&#x7684;&#x521D;&#x59CB;&#x5316;&#x503C;&#xFF08;property <type> <name> : <value>&#xFF09;&#x3002;&#x5982;&#x679C;&#x6CA1;&#x6709;&#x521D;&#x59CB;&#x503C;&#x5C06;&#x4F1A;&#x7ED9;&#x5B9A;&#x4E00;&#x4E2A;&#x7CFB;&#x7EDF;&#x521D;&#x59CB;&#x503C;&#x4F5C;&#x4E3A;&#x521D;&#x59CB;&#x503C;&#x3002;<strong>&#x6CE8;&#x610F;&#x5982;&#x679C;&#x5C5E;&#x6027;&#x540D;&#x4E0E;&#x5DF2;&#x5B9A;&#x4E49;&#x7684;&#x9ED8;&#x8BA4;&#x5C5E;&#x6027;&#x540D;&#x4E0D;&#x91CD;&#x590D;&#xFF0C;&#x4F7F;&#x7528;default&#x5173;&#x952E;&#x5B57;&#x4F60;&#x53EF;&#x4EE5;&#x5C06;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x5B9A;&#x4E49;&#x4E3A;&#x9ED8;&#x8BA4;&#x5C5E;&#x6027;&#x3002;&#x8FD9;&#x5728;&#x4F60;&#x6DFB;&#x52A0;&#x5B50;&#x5143;&#x7D20;&#x65F6;&#x7528;&#x5F97;&#x7740;&#xFF0C;&#x5982;&#x679C;&#x4ED6;&#x4EEC;&#x662F;&#x53EF;&#x89C6;&#x5316;&#x7684;&#x5143;&#x7D20;&#xFF0C;&#x5B50;&#x5143;&#x7D20;&#x4F1A;&#x81EA;&#x52A8;&#x7684;&#x6DFB;&#x52A0;&#x9ED8;&#x8BA4;&#x5C5E;&#x6027;&#x7684;&#x5B50;&#x7C7B;&#x578B;&#x94FE;&#x8868;&#xFF08;children property list&#xFF09;</strong>&#x3002;</value></name></type></p>
</li>
<li><p>&#x53E6;&#x4E00;&#x4E2A;&#x91CD;&#x8981;&#x7684;&#x58F0;&#x660E;&#x5C5E;&#x6027;&#x7684;&#x65B9;&#x6CD5;&#x662F;&#x4F7F;&#x7528;alias&#x5173;&#x952E;&#x5B57;&#xFF08;property alias <name> : <reference>&#xFF09;&#x3002;alias&#x5173;&#x952E;&#x5B57;&#x5141;&#x8BB8;&#x6211;&#x4EEC;&#x8F6C;&#x53D1;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x6216;&#x8005;&#x8F6C;&#x53D1;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x5BF9;&#x8C61;&#x81EA;&#x8EAB;&#x5230;&#x53E6;&#x4E00;&#x4E2A;&#x4F5C;&#x7528;&#x57DF;&#x3002;&#x6211;&#x4EEC;&#x5C06;&#x5728;&#x540E;&#x9762;&#x5B9A;&#x4E49;&#x7EC4;&#x4EF6;&#x5BFC;&#x51FA;&#x5185;&#x90E8;&#x5C5E;&#x6027;&#x6216;&#x8005;&#x5F15;&#x7528;&#x6839;&#x7EA7;&#x5143;&#x7D20;id&#x4F1A;&#x4F7F;&#x7528;&#x5230;&#x8FD9;&#x4E2A;&#x6280;&#x672F;&#x3002;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x522B;&#x540D;&#x4E0D;&#x9700;&#x8981;&#x7C7B;&#x578B;&#xFF0C;&#x5B83;&#x4F7F;&#x7528;&#x5F15;&#x7528;&#x7684;&#x5C5E;&#x6027;&#x7C7B;&#x578B;&#x6216;&#x8005;&#x5BF9;&#x8C61;&#x7C7B;&#x578B;&#x3002;</reference></name></p>
</li>
<li><p>text&#x5C5E;&#x6027;&#x4F9D;&#x8D56;&#x4E8E;&#x81EA;&#x5B9A;&#x4E49;&#x7684;timers&#xFF08;int&#x6574;&#x578B;&#x6570;&#x636E;&#x7C7B;&#x578B;&#xFF09;&#x5C5E;&#x6027;&#x3002;int&#x6574;&#x578B;&#x6570;&#x636E;&#x4F1A;&#x81EA;&#x52A8;&#x7684;&#x8F6C;&#x6362;&#x4E3A;string&#x5B57;&#x7B26;&#x4E32;&#x7C7B;&#x578B;&#x6570;&#x636E;&#x3002;&#x8FD9;&#x6837;&#x7684;&#x8868;&#x8FBE;&#x65B9;&#x5F0F;&#x672C;&#x8EAB;&#x4E5F;&#x662F;&#x53E6;&#x4E00;&#x79CD;&#x5C5E;&#x6027;&#x7ED1;&#x5B9A;&#x7684;&#x4F8B;&#x5B50;&#xFF0C;&#x6587;&#x672C;&#x7ED3;&#x679C;&#x4F1A;&#x5728;times&#x5C5E;&#x6027;&#x6BCF;&#x6B21;&#x6539;&#x53D8;&#x65F6;&#x5237;&#x65B0;&#x3002;</p>
</li>
<li><p>&#x4E00;&#x4E9B;&#x5C5E;&#x6027;&#x662F;&#x6309;&#x7EC4;&#x5206;&#x914D;&#x7684;&#x5C5E;&#x6027;&#x3002;&#x5F53;&#x4E00;&#x4E2A;&#x5C5E;&#x6027;&#x9700;&#x8981;&#x7ED3;&#x6784;&#x5316;&#x5E76;&#x4E14;&#x76F8;&#x5173;&#x7684;&#x5C5E;&#x6027;&#x9700;&#x8981;&#x8054;&#x7CFB;&#x5728;&#x4E00;&#x8D77;&#x65F6;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x8FD9;&#x6837;&#x4F7F;&#x7528;&#x5B83;&#x3002;&#x53E6;&#x4E00;&#x4E2A;&#x7EC4;&#x5C5E;&#x6027;&#x7684;&#x7F16;&#x7801;&#x65B9;&#x5F0F;&#x662F; font{family: &quot;UBuntu&quot;; pixelSize: 24 }&#x3002;</p>
</li>
<li><p>&#x4E00;&#x4E9B;&#x5C5E;&#x6027;&#x662F;&#x5143;&#x7D20;&#x81EA;&#x8EAB;&#x7684;&#x9644;&#x52A0;&#x5C5E;&#x6027;&#x3002;&#x8FD9;&#x6837;&#x505A;&#x662F;&#x4E3A;&#x4E86;&#x5168;&#x5C40;&#x7684;&#x76F8;&#x5173;&#x5143;&#x7D20;&#x5728;&#x5E94;&#x7528;&#x7A0B;&#x5E8F;&#x4E2D;&#x53EA;&#x51FA;&#x73B0;&#x4E00;&#x6B21;&#xFF08;&#x4F8B;&#x5982;&#x952E;&#x76D8;&#x8F93;&#x5165;&#xFF09;&#x3002;&#x7F16;&#x7801;&#x65B9;&#x5F0F;<element>.<property>: <value> &#x3002;</value></property></element></p>
</li>
<li><p>&#x5BF9;&#x4E8E;&#x6BCF;&#x4E2A;&#x5143;&#x7D20;&#x4F60;&#x90FD;&#x53EF;&#x4EE5;&#x63D0;&#x4F9B;&#x4E00;&#x4E2A;&#x4FE1;&#x53F7;&#x64CD;&#x4F5C;&#x3002;&#x8FD9;&#x4E2A;&#x64CD;&#x4F5C;&#x5728;&#x5C5E;&#x6027;&#x503C;&#x6539;&#x53D8;&#x65F6;&#x88AB;&#x8C03;&#x7528;&#x3002;&#x4F8B;&#x5982;&#x8FD9;&#x91CC;&#x6211;&#x4EEC;&#x5B8C;&#x6210;&#x4E86;&#x5F53;height&#xFF08;&#x9AD8;&#x5EA6;&#xFF09;&#x6539;&#x53D8;&#x65F6;&#x4F1A;&#x4F7F;&#x7528;&#x63A7;&#x5236;&#x53F0;&#x8F93;&#x51FA;&#x4E00;&#x4E2A;&#x4FE1;&#x606F;&#x3002;</p>
</li>
</ol>
<p><strong>&#x8B66;&#x544A;</strong></p>
<p><strong>&#x4E00;&#x4E2A;&#x5143;&#x7D20;id&#x5E94;&#x8BE5;&#x53EA;&#x5728;&#x5F53;&#x524D;&#x6587;&#x6863;&#x4E2D;&#x88AB;&#x5F15;&#x7528;&#x3002;QML&#x63D0;&#x4F9B;&#x4E86;&#x52A8;&#x6001;&#x4F5C;&#x7528;&#x57DF;&#x7684;&#x673A;&#x5236;&#xFF0C;&#x540E;&#x52A0;&#x8F7D;&#x7684;&#x6587;&#x6863;&#x4F1A;&#x8986;&#x76D6;&#x4E4B;&#x524D;&#x52A0;&#x8F7D;&#x6587;&#x6863;&#x7684;&#x5143;&#x7D20;id&#x53F7;&#xFF0C;&#x8FD9;&#x6837;&#x5C31;&#x53EF;&#x4EE5;&#x5F15;&#x7528;&#x5DF2;&#x52A0;&#x8F7D;&#x5E76;&#x4E14;&#x6CA1;&#x6709;&#x88AB;&#x8986;&#x76D6;&#x7684;&#x5143;&#x7D20;id&#xFF0C;&#x8FD9;&#x6709;&#x70B9;&#x7C7B;&#x4F3C;&#x521B;&#x5EFA;&#x5168;&#x5C40;&#x53D8;&#x91CF;&#x3002;&#x4F46;&#x4E0D;&#x5E78;&#x7684;&#x662F;&#x8FD9;&#x6837;&#x7684;&#x4EE3;&#x7801;&#x9605;&#x8BFB;&#x6027;&#x5F88;&#x5DEE;&#x3002;&#x76EE;&#x524D;&#x8FD9;&#x4E2A;&#x8FD8;&#x6CA1;&#x6709;&#x529E;&#x6CD5;&#x89E3;&#x51B3;&#x8FD9;&#x4E2A;&#x95EE;&#x9898;&#xFF0C;&#x6240;&#x4EE5;&#x4F60;&#x4F7F;&#x7528;&#x8FD9;&#x4E2A;&#x673A;&#x5236;&#x7684;&#x65F6;&#x5019;&#x6700;&#x597D;&#x4ED4;&#x7EC6;&#x4E00;&#x4E9B;&#x751A;&#x81F3;&#x4E0D;&#x8981;&#x4F7F;&#x7528;&#x8FD9;&#x79CD;&#x673A;&#x5236;&#x3002;&#x5982;&#x679C;&#x4F60;&#x60F3;&#x5411;&#x6587;&#x6863;&#x5916;&#x63D0;&#x4F9B;&#x5143;&#x7D20;&#x7684;&#x8C03;&#x7528;&#xFF0C;&#x4F60;&#x53EF;&#x4EE5;&#x5728;&#x6839;&#x5143;&#x7D20;&#x4E0A;&#x4F7F;&#x7528;&#x5C5E;&#x6027;&#x5BFC;&#x51FA;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x63D0;&#x4F9B;&#x3002;</strong></p>
<h2 id="412-&#x811A;&#x672C;&#xFF08;scripting&#xFF09;">4.1.2 &#x811A;&#x672C;&#xFF08;Scripting&#xFF09;</h2>
<p>QML&#x4E0E;JavaScript&#x662F;&#x6700;&#x597D;&#x7684;&#x914D;&#x5408;&#x3002;&#x5728;JavaScrpit&#x7684;&#x7AE0;&#x8282;&#x4E2D;&#x6211;&#x4EEC;&#x5C06;&#x4F1A;&#x66F4;&#x52A0;&#x8BE6;&#x7EC6;&#x7684;&#x4ECB;&#x7ECD;&#x8FD9;&#x79CD;&#x5173;&#x7CFB;&#xFF0C;&#x73B0;&#x5728;&#x6211;&#x4EEC;&#x53EA;&#x9700;&#x8981;&#x4E86;&#x89E3;&#x8FD9;&#x79CD;&#x5173;&#x7CFB;&#x5C31;&#x53EF;&#x4EE5;&#x4E86;&#x3002;</p>
<pre><code>    Text {
        id: label

        x: 24; y: 24

        // custom counter property for space presses
        property int spacePresses: 0

        text: &quot;Space pressed: &quot; + spacePresses + &quot; times&quot;

        // (1) handler for text changes
        onTextChanged: console.log(&quot;text changed to:&quot;, text)

        // need focus to receive key events
        focus: true

        // (2) handler with some JS
        Keys.onSpacePressed: {
            increment()
        }

        // clear the text on escape
        Keys.onEscapePressed: {
            label.text = &apos;&apos;
        }

        // (3) a JS function
        function increment() {
            spacePresses = spacePresses + 1
        }
    }
</code></pre><ol>
<li><p>&#x6587;&#x672C;&#x6539;&#x53D8;&#x64CD;&#x4F5C;onTextChanged&#x4F1A;&#x5C06;&#x6BCF;&#x6B21;&#x7A7A;&#x683C;&#x952E;&#x6309;&#x4E0B;&#x5BFC;&#x81F4;&#x7684;&#x6587;&#x672C;&#x6539;&#x53D8;&#x8F93;&#x51FA;&#x5230;&#x63A7;&#x5236;&#x53F0;&#x3002;</p>
</li>
<li><p>&#x5F53;&#x6587;&#x672C;&#x5143;&#x7D20;&#x63A5;&#x6536;&#x5230;&#x7A7A;&#x683C;&#x952E;&#x64CD;&#x4F5C;&#xFF08;&#x7528;&#x6237;&#x5728;&#x952E;&#x76D8;&#x4E0A;&#x70B9;&#x51FB;&#x7A7A;&#x683C;&#x952E;&#xFF09;&#xFF0C;&#x4F1A;&#x8C03;&#x7528;JavaScript&#x51FD;&#x6570;increment()&#x3002;</p>
</li>
<li><p>&#x5B9A;&#x4E49;&#x4E00;&#x4E2A;JavaScript&#x51FD;&#x6570;&#x4F7F;&#x7528;&#x8FD9;&#x79CD;&#x683C;&#x5F0F;function (){....}&#xFF0C;&#x5728;&#x8FD9;&#x4E2A;&#x4F8B;&#x5B50;&#x4E2D;&#x662F;&#x589E;&#x52A0;spacePressed&#x7684;&#x8BA1;&#x6570;&#x3002;&#x6BCF;&#x6B21;spacePressed&#x7684;&#x589E;&#x52A0;&#x90FD;&#x4F1A;&#x5BFC;&#x81F4;&#x5B83;&#x7ED1;&#x5B9A;&#x7684;&#x5C5E;&#x6027;&#x66F4;&#x65B0;&#x3002;</p>
</li>
</ol>
<p><strong>&#x6CE8;&#x610F;</strong></p>
<p><strong>QML&#x7684;&#xFF1A;&#xFF08;&#x5C5E;&#x6027;&#x7ED1;&#x5B9A;&#xFF09;&#x4E0E;JavaScript&#x7684;=&#xFF08;&#x8D4B;&#x503C;&#xFF09;&#x662F;&#x4E0D;&#x540C;&#x7684;&#x3002;&#x7ED1;&#x5B9A;&#x662F;&#x4E00;&#x4E2A;&#x534F;&#x8BAE;&#xFF0C;&#x5E76;&#x4E14;&#x5B58;&#x5728;&#x4E8E;&#x6574;&#x4E2A;&#x751F;&#x547D;&#x5468;&#x671F;&#x3002;&#x7136;&#x800C;JavaScript&#x8D4B;&#x503C;&#xFF08;=&#xFF09;&#x53EA;&#x4F1A;&#x4EA7;&#x751F;&#x4E00;&#x6B21;&#x6548;&#x679C;&#x3002;&#x5F53;&#x4E00;&#x4E2A;&#x65B0;&#x7684;&#x7ED1;&#x5B9A;&#x751F;&#x6548;&#x6216;&#x8005;&#x4F7F;&#x7528;JavaScript&#x8D4B;&#x503C;&#x7ED9;&#x5C5E;&#x6027;&#x65F6;&#xFF0C;&#x7ED1;&#x5B9A;&#x7684;&#x751F;&#x547D;&#x5468;&#x671F;&#x5C31;&#x4F1A;&#x7ED3;&#x675F;&#x3002;&#x4F8B;&#x5982;&#x4E00;&#x4E2A;&#x6309;&#x952E;&#x7684;&#x64CD;&#x4F5C;&#x8BBE;&#x7F6E;&#x6587;&#x672C;&#x5C5E;&#x6027;&#x4E3A;&#x4E00;&#x4E2A;&#x7A7A;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#x5C06;&#x4F1A;&#x9500;&#x6BC1;&#x6211;&#x4EEC;&#x7684;&#x589E;&#x503C;&#x663E;&#x793A;&#xFF1A;</strong></p>
<pre><code>Keys.onEscapePressed: {
    label.text = &apos;&apos;
}
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<p><strong>&#x5F53;&#x4F60;&#x5BF9;&#x6539;&#x53D8;&#x5C5E;&#x6027;&#x7684;&#x7B56;&#x7565;&#x6709;&#x51B2;&#x7A81;&#x65F6;&#xFF08;&#x6587;&#x672C;&#x7684;&#x6539;&#x53D8;&#x57FA;&#x4E8E;&#x4E00;&#x4E2A;&#x589E;&#x503C;&#x7684;&#x7ED1;&#x5B9A;&#x5E76;&#x4E14;&#x53EF;&#x4EE5;&#x88AB;JavaScript&#x8D4B;&#x503C;&#x6E05;&#x96F6;&#xFF09;&#xFF0C;&#x7C7B;&#x4F3C;&#x4E8E;&#x8FD9;&#x4E2A;&#x4F8B;&#x5B50;&#xFF0C;&#x4F60;&#x6700;&#x597D;&#x4E0D;&#x8981;&#x4F7F;&#x7528;&#x7ED1;&#x5B9A;&#x5C5E;&#x6027;&#x3002;&#x4F60;&#x9700;&#x8981;&#x4F7F;&#x7528;&#x8D4B;&#x503C;&#x7684;&#x65B9;&#x5F0F;&#x6765;&#x6539;&#x53D8;&#x5C5E;&#x6027;&#xFF0C;&#x5C5E;&#x6027;&#x7ED1;&#x5B9A;&#x4F1A;&#x5728;&#x8D4B;&#x503C;&#x64CD;&#x4F5C;&#x540E;&#x88AB;&#x9500;&#x6BC1;&#xFF08;&#x9500;&#x6BC1;&#x534F;&#x8BAE;&#xFF01;&#xFF09;&#x3002;</strong></p>

                                
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